Aerator



' Feb. 4-, 1930. .1. B. FLETCHER 1,745,412

AERATOR Filed Nov. 10, 1928 John B. F [etc/1e) Patented Feb. 4, 1930 I H I i p Qumran 'STATESf'PATENT OFFICE";

JonN B. FLETCH R, on NEW YORK, 1v. Y., ASSIGNOR crown-HALF T JOHN L. r MCGUCKEN, or TAMPA, FLORIDA.

AERATOR Application filed November 10, 1928." Serial No. 318,400.

My invention relates to an aerator de- 1 A plurality of battle plates 21 are disposed signed primarilyfor supplying or charging radially about the motor shaft in order to water with air, but which is susceptible of. prevent rotation of the water below the, imother uses. peller, and said battle plates rest on edge and 5' It is an object of the invention to provide are cut out at their inner upper corners to 55 a device of this character which will force. accommodate the impeller, but have their the water upwardly in a fine spray thereby lower portion extending beneath the blades breaking it up sufliciently' to permit the: of the'impeller in close proximity to the escape of obnoxious gases which tend to make motor shaft. The upper edges of the baffle the water stale, and at the same time perplates terminate in a plane slightly above 69 mitting the water to become charged with the plane of the impeller and thuswhen the oxygen. impeller. is rotating, water may pass in to- It is also an object of'the invention to proward the impeller radially, such water bevide a simple inexpensive machine economing prevented from rotating by the baffle ical of operation and one which will cause plates is sprayed upwardly and outwardly only a very slight evaporation of the water; in a graceful curve, being at the same time all as will be'hereinafter more particularly finely divided to permit the escape of obspecified and claimed. noxious gases such as for example sulphur gas Referring to the accompanying drawings, and the like, and at the same time permitting which are made a part hereof and on which the absorption of oxygen from the atmos-,

similar reference characters indicate similar phere.

parts, 1 With some aerators there is a very great Figure 1 is a vertical section illustrating loss by evaporation which amounts in some one'application of my invention, and cases to as high as fifteen per cent. With 25 -Figure 2, a section on line 2-2 of Fig. 1. my device the evaporation is scarcely per- In the drawings reference character 10 inceptible being never more than three and onedicates the base of the device which in the half per cent.

present instance is formed of cast metal or It will be obvious to those skilled in the the like but which may be constructed of art that various changes may be made in my other" desired material; The base has undevice without departing from the spirit of derlying strengthening fins or webs 11, said the invention, and I, therefore, do not limit base being provided with supporting feet myself to what is shown in the drawings and 1 12. A plurality of legs 13 of angle iron or described in the specification, but'only as set similar metal are secured in spaced relation forth in the appended claims.

5 upon the base 10 and converge toward their Having thus fully'described my said in; upper-ends and have such ends secured to a vention, what I claim as new and desire to disc 14 which forms a support for a'motor secure by Letters Patent, is: 15, such motor being of a construction which 1. An aerator comprising a support, an

I is not injured by its being exposed to water. impeller mounted to rotate in a horizontal Themotor 15 is provided with a depending plane above the support, and battle plates ar shaft 16 connected by means of a universal ranged vertically in radial relation around joint'25 with a shaft 16 which extends down the impeller and extending beneath the same into close proximity to the base 10. and rests in close proximity to its axis, substantially upon a ball bearing 17 in a socket 18 in a as set forth. supporting cup19. The shaft 16has an im- 7 2. An aerator comprising a support, an 'peller 20 of ordinary three-blade construcimpeller, and battle plates disposed on edge tion mounted on its lower portion-in spaced around said impeller and extending beneath relation from the base of the device, adapted the same in close proximity to its axis, subto be rotated for forcing the water in a stantially as set forth. I

50 spray upwardly. 3. A device for aerating water comprising a. base, a top, legs connecting said base and top, driving means associated with the top, a shaft operated by the driving means and depending through the top and resting upon the base, an impeller on said shaft adjacent its lower end, and baffle plates mounted on said base in edgewise position an'd extending beneath said impeller in close proximityto said shaft,substantiallyw as set forth. 10 4. 'A device for aerating water Comprising a base, a top, legs connecting said base and top, driving means associated With theltop,aashaft operated by the driving means and depending through the top and resting upon the base, an impeller on said shaft adjacent its lower end, and bafile: plates mounted on said base in edgeWise position and extending beneath'said-impeller in close proximity to sai'dsh'aft, said bafileaiplates havin'gtheir upper-edges extending above the impeller and being 'cut out to accommodate the. impeller, substantially "as set forth. In Witness whereof, I have hereunto set my ha'nd at Washington, District of Colum- 25 bia, this "fifth day of November, A. 1). nine- "te'en hundred" I and twenty-eight.

JOHNtB. FLETCHER. 

